To add elements to a set

Use the [set->insert] method. This example adds all of the elements of an array to a set.

Note: Since a set can only contain one of any given element, this is a simple method for removing duplicates from an array or map.

Code

var( days = array('Mon','Tues','Fri','Tues','Sun','Sat','Mon'),
     myDays = set )

$days->forEach => {
     $myDays->insert(#1)
}

$myDays

Result

set(Fri, Mon, Sat, Sun, Tues)